Add Project Roman session fix analysis and design documentation

This commit includes comprehensive analysis and design documentation
for fixing critical session management issues in manually created projects.

Phase 1 Complete:
- Identified 4 critical errors (SSE null reference, array access,
  race conditions, virtual workingDir mismatch)
- Created detailed root cause analysis
- Designed comprehensive solution with 5 components
- Complete implementation plan with testing strategy

Files added:
- ROMAN_SESSION_ISSUE_ANALYSIS.md - Detailed root cause analysis
- ROMAN_SESSION_FIX_DESIGN.md - Complete solution design
- ROMAN_IMPLEMENTATION_SUMMARY.md - Quick reference guide
- PHASE_1_COMPLETE_REPORT.md - Executive summary

Next: Awaiting AI Engineer review before implementation

Co-Authored-By: Claude <noreply@anthropic.com>

logs/chat-monitor/failure-1769094375190.json

@@ -0,0 +1,5 @@
+{
+  "sessionId": "session-1769089576431-k4vxmig17",
+  "failureType": "browser_sse_error",
+  "error": "[SSEClient] Connection error for session session-1769089576431-k4vxmig17: {\"isTrusted\":true}"
+}